Acquisitions and Disposals	9 Months Ended
Acquisitions and Disposals	Sep. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Acquisitions and Disposals	Acquisitions and Disposals Acquisitions During the nine months ended September 30, 2023: •The Company acquired a controlling interest in two surgical facilities and a physician practice for aggregate cash consideration of $23.1 million, net of cash acquired, and non-cash consideration of $1.3 million, which consisted of a non-controlling interest in one of the Company's existing surgical facilities. In connection with these acquisitions, the Company preliminarily recognized non-controlling interests of $20.4 million and goodwill of $39.7 million. •The Company acquired a controlling interest in two surgical facilities and an in-development de novo surgical facility, which were previously accounted for as equity method investments, for aggregate cash consideration of $26.9 million, net of cash acquired. The Company also amended the operating agreement of a previously non-controlled surgical facility resulting in the Company obtaining a controlling interest in the facility. These transactions resulted in the consolidation of the previously non-consolidated entities. The previously held non-controlling interests were remeasured and recorded at fair value as of the dates of the transactions. The fair value measurement utilizes Level 3 inputs, which includes unobservable data. The acquisition date fair value of the previously held non-controlling interests was $27.3 million. As a result of increasing its ownership interest, the Company recognized a net loss of $7.1 million included in net loss on disposals, consolidations and deconsolidations in the condensed consolidated statements of operations for the nine months ended September 30, 2023. The net loss was determined based on the difference between the fair value of the Company's previously held non-controlling interests in the entities and the carrying values immediately prior to the transactions. In connection with the consolidation of these facilities, the Company preliminarily recognized non-controlling interests of $55.1 million and goodwill of $106.3 million. •The Company acquired non-controlling interests in five surgical facilities and two in-development de novo surgical facilities for aggregate cash consideration of $50.2 million. The non-controlling interests were accounted for as equity method investments and recorded as a component of investments in and advances to affiliates in the accompanying condensed consolidated balance sheets. The Company also paid cash consideration of $21.0 million to acquire management rights from the prior management service provider related to four of the aforementioned surgical facilities. Management rights agreements are accounted for and recorded as a component of intangible assets, net in the accompanying condensed consolidated balance sheets. The cash paid to acquire the management rights is presented as a component of other investing activities on the condensed consolidated statements of cash flows. During the nine months ended September 30, 2022: •The Company acquired a controlling interest in a surgical hospital for cash consideration of $64.3 million, net of cash acquired, and assumed debt of $39.4 million. As of September 30, 2022, $61.0 million of the cash consideration was deferred and included as a component of other current liabilities in the accompanying condensed consolidated balance sheets. In connection with the acquisition, the Company preliminarily recognized non-controlling interests of $45.3 million and goodwill of $146.3 million. In October 2022, pursuant to the purchase agreement, the Company paid the deferred consideration and the debt previously assumed with available cash resources. •The Company acquired a controlling interest in four other surgical facilities, two of which were merged into existing surgical facilities, and a physician practice for aggregate cash consideration of $79.3 million, net of cash acquired, and non-cash consideration of $5.3 million, which consisted of a non-controlling interest in two of the Company's existing surgical facilities. In connection with the acquisitions the Company preliminarily recognized non-controlling interests of $41.5 million and goodwill of $121.1 million. •The Company acquired non-controlling interests in seven surgical facilities and seven in-development de novo surgical facilities for aggregate cash consideration of $95.1 million. The non-controlling interests were accounted for as equity method investments and recorded as a component of investments in and advances to affiliates in the accompanying condensed consolidated balance sheets. Disposals During the nine months ended September 30, 2023: •The Company sold its interests in six surgical facilities for aggregate net cash proceeds of $30.4 million, a portion of which was held in escrow pursuant to the purchase agreements for such transactions. In connection with these transactions, the Company recognized a pre-tax gain of $26.9 million included in net loss on disposals, consolidations and deconsolidations in the condensed consolidated statements of operations for the nine months ended September 30, 2023. •The Company disposed of its non-controlling interests in a surgical facility and an in-development de novo surgical facility, which were previously accounted for as equity method investments, for cash proceeds of $1.5 million. In connection with these transactions, the Company recognized a pre-tax loss of $13.7 million included in net loss on disposals, consolidations and deconsolidations in the condensed consolidated statements of operations for the nine months ended September 30, 2023. During the nine months ended September 30, 2022: •The Company sold its interests in a surgical facility, which was previously accounted for as an equity method investment, for net cash proceeds of $11.5 million, and recognized a pre-tax loss of $0.4 million included in net loss on disposals and consolidations in the condensed consolidated statements of operations for the nine months ended September 30, 2022. •The Company contributed its interests in two surgical facilities as non-cash consideration for non-controlling interests in two new separate entities. As a result of these transactions, the Company lost control of the previously controlled surgical facilities but retains a non-controlling interest in each, resulting in the deconsolidation of the previously consolidated entities. The remaining non-controlling interests were accounted for as equity method investments, and initially measured and recorded at fair value as of the dates of the transactions. The fair value measurement utilizes Level 3 inputs, which includes unobservable data, to measure the fair value of the retained non-controlling interests. The fair value determination was based on a combination of multiple valuation methods, which included discounted cash flow and market value approach, which incorporates estimates of future earnings and market valuation multiples for certain guideline companies. The fair value of the investments of $9.8 million was recorded as a component of investments in and advances to affiliates in the accompanying condensed consolidated balance sheets. Further, based on the valuation, the transactions resulted in a pretax net loss on deconsolidations of $5.6 million, which is included in net loss on disposals, consolidations and deconsolidations in the accompanying condensed consolidated statement of operations for the nine months ended September 30, 2022. The net loss was determined based on the difference between the fair value of the Company’s retained interests in the entities and the carrying values of both the tangible and intangible assets of the entities immediately prior to the transactions.